- // MIR for `main` before ConstProp
+ // MIR for `main` after ConstProp
  
  fn main() -> () {
      let mut _0: ();                      // return place in scope 0 at $DIR/cast.rs:+0:11: +0:11
      let _1: u32;                         // in scope 0 at $DIR/cast.rs:+1:9: +1:10
      scope 1 {
          debug x => _1;                   // in scope 1 at $DIR/cast.rs:+1:9: +1:10
          let _2: u8;                      // in scope 1 at $DIR/cast.rs:+3:9: +3:10
          scope 2 {
              debug y => _2;               // in scope 2 at $DIR/cast.rs:+3:9: +3:10
          }
      }
  
      bb0: {
          StorageLive(_1);                 // scope 0 at $DIR/cast.rs:+1:9: +1:10
-         _1 = const 42_u8 as u32 (IntToInt); // scope 0 at $DIR/cast.rs:+1:13: +1:24
+         _1 = const 42_u32;               // scope 0 at $DIR/cast.rs:+1:13: +1:24
          StorageLive(_2);                 // scope 1 at $DIR/cast.rs:+3:9: +3:10
-         _2 = const 42_u32 as u8 (IntToInt); // scope 1 at $DIR/cast.rs:+3:13: +3:24
+         _2 = const 42_u8;                // scope 1 at $DIR/cast.rs:+3:13: +3:24
          _0 = const ();                   // scope 0 at $DIR/cast.rs:+0:11: +4:2
          StorageDead(_2);                 // scope 1 at $DIR/cast.rs:+4:1: +4:2
          StorageDead(_1);                 // scope 0 at $DIR/cast.rs:+4:1: +4:2
          return;                          // scope 0 at $DIR/cast.rs:+4:2: +4:2
      }
  }
  
